Half to frank h



(No Model.) I

R. G. GORNFORTH.

' FITTING FOR CYCLES.

No. 590,825. Patented Sept. 28,1897

UNITED STATES PATENT OFFICE.

ROBERT C. CORNFORTH, OF SEYMOUR, CONNECTICUT, ASSIGNOR OF ONE- IIALF TOFRANK H. BEECHER, OF SAME PLACE.

FITTING FOR CYCLES.

V SPECIFICATION forming part of Letters Patent No. 590,825, datedSeptember 28, 1897. I Application filed April 3, 1897. Serial No.630,551. (No model.)

To 60% whom it may concern.- Be it known that I, ROBERT G. CORNFORTH, ofSeymour, in the county of New Haven and State of Connecticut, haveinvented anew Improvement in Fittings for Cycles; and I do herebydeclare the following, when taken in connection with the accompanyingdrawings and the letters of reference marked thereon, to be aful1,clear, and exact description of the same, and-Which said drawingsconstitute part of this specification, and represent, in

Figure 1, a side view of a fitting or bearing constructed in accordancewith my invention; Fig. 1, a sectional view on line a b of Fig. '1; Fig.2, a front view of the same; Fig. 3, a top' view; Fig. 4, a plan view ofthe blank preparatory to forming the tubular portions.

This invention relates to an improvement in fittings for cycles, andparticularly to the construction of the rear-fork ends, to which .partsthe tubular-frames are attached, and

particularly to that class of ends in which an adjusting-screw isarranged for moving the axle of the rear wheel for the purpose oftightening the chain. In the more general construction of this class offittings the fitting is formed of several parts. Thus the tubularprojections to. which the tubular frames are attached are formedindependent of the plate.

The object of this invention is to produce a fitting or fork comprisinga plate, tubular bearing for the frame, and a bearing for theadjusting-screw, all :from a single piece of metal; and it consists inthe construction herein described, and particularly recited in theclaim.

As shown in the accompanying drawings,

the fork is formed from a single piece of metal,

A, having an arm projecting outward at each corner, as here indicated byB, B, B and B In the center of the plate is a long slot C.

The arms B, B, B and B are struck in semicylindrical shape, and also soas to form shoul-- and a long cylindrical bearing opening into the slot.The. slot C forms the bearing for the rear wheel, and the tubularportion E is threaded to receive the usual adjusting-screw, while theends of the tubular frame are set over the tubular ends of the bearingand abutted against the shoulders D'. By forming the two ends of theblank in duplicate the edges will exactly meet and require but littlefinishing. If desired, the parts of the plate might be secured togetherby rivets, but it is found in practice that the clamping-nuts for theaxle, which is inserted in the slot, is sufficient to hold the partstogether, and if there is a slight play between them that space will bereduced by the said clamping-nut and bind the sides of the tubularportion E upon the screw, so as to prevent the accidental vdisplacementof that screw. It will thus be seen that a coupling as described isreadily formed strip of sheet metal, sections of each member formed atopposite ends of said strip which is doubled together, substantially asdescribed.

In testimony whereof I have signed this specification in thepresence' oftwo subscribing witnesses.

I ROBERT G. CORNFORTI-I.

Witnesses:

F. W. ADAMs, GEo. H. WIRTEMBURG.

